<template>
	<el-container class="home-container">
		<!-- 头部区域 -->
		<el-header>
			<div>
				<img src="../assets/lALPD4BhtIKRIHI4PQ_61_56.png" alt="">
				<span>电商后台管理系统</span>
			</div>
			<el-button type="info" @click="logout">退出</el-button>
		</el-header>
		<!-- 页面主题区域 -->
		<el-container>
			<!-- 侧边栏 -->
			<el-aside :width="isCollapse ? '64px' : '200px' ">
				<div class="toggle-button" @click="toggleCollapse">
					|||
				</div>
				<!-- 侧边栏菜单区域 -->
				<el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF" unique-opened :collapse="isCollapse"
				 :collapse-transition="false"
				 router
				 :default-active="activePath">
					<!-- 一级菜单 -->
					<el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
						<!-- 一级菜单的模板区 -->
						<template slot="title">
							<!-- 图标 -->
							<i :class="iconsObj[item.id]"></i>
							<!-- 文本 -->
							<span>{{item.authName}}</span>
						</template>
						<!-- 二级菜单 -->
						<el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
							<template slot="title">
								<!-- 图标 -->
								<i class="el-icon-menu"></i>
								<!-- 文本 -->
								<span>{{subItem.authName}}</span>
							</template></el-menu-item>
					</el-submenu>
				</el-menu>
			</el-aside>
			<!-- 右侧内容字体 -->
			<el-main>
				<!-- 路由占位符 -->
				<router-view></router-view>
			</el-main>
		</el-container>
	</el-container>
</template>

<script>
	export default {
		data() {
			return {
				menulist: [],
				iconsObj: {
					'125': 'iconfont icon-user',
					'103': 'iconfont icon-tijikongjian',
					'101': 'iconfont icon-shangpin',
					'102': 'iconfont icon-danju',
					'145': 'iconfont icon-baobiao'
				},
				//是否折叠
				isCollapse: false,
				//被激活的链接地址
				activePath:''
			}
		},
		created() {
			this.getMenuList()
			this.activePath=window.sessionStorage.getItem('activePath')
		},
		methods: {
			logout() {
				window.sessionStorage.clear()
				this.$router.push('/login')
			},
			//获取所有的菜单
			async getMenuList() {
				const {
					data: res
				} = await this.$http.get('menus')
				if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
				this.menulist = res.data
				console.log(res)
			},
			//点击按钮，切换菜单的折叠和展开
			toggleCollapse() {
				this.isCollapse = !this.isCollapse
			},
			//保存链接的激活状态
			saveNavState(activePath){
				window.sessionStorage.setItem('activePath',activePath)
				this.activePath=activePath
			}
			
		}
	}
</script>

<style Lang="less" scoped>
	.el-header {
		background-color: #373d41;
		display: flex;
		justify-content: space-between;
		padding-left: 0;
		align-items: center;
		color: #fff;
		font-size: 20px;
	}

	.el-header>div {
		display: flex;
		align-items: center;
	}

	.el-header>div span {
		margin-left: 15px;
	}

	.el-aside {
		background-color: #333744;
	}

	.el-aside el-menu {
		border-right: none;
	}

	.el-main {
		background-color: #eaedf1;
	}

	.home-container {
		height: 100%;
	}

	.iconfont {
		margin-right: 10px;
	}

	.toggle-button {
		background-color: #4A5064;
		font-size: 10px;
		line-height: 24px;
		color: #fff;
		text-align: center;
		letter-spacing: 0.2em;
		cursor: pointer;
	}
</style>
